From: jmichel AT schur DOT institut DOT math DOT jussieu DOT fr (Jean Michel)
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Bug in djgpp libc
Date: 1 Jan 2001 17:24:47 +0100
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To: djgpp AT delorie DOT com
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In article <Pine DOT SUN DOT 3 DOT 91 DOT 1010101162145 DOT 9706D-100000 AT is>,
Eli Zaretskii  <djgpp AT delorie DOT com> wrote:
>
>Which one?  There's no mnemonic for such problems in any other 
>DOS/Windows compiler I know about.  And Unix compilers don't know 
>anything about this brain damage either.
>
>ENOSPC is returned because the console device refuses to take any more 
>data (the _write primitive tries twice before it gives up).
...
>The program can know that it writes to a console device: it just needs to 
>call isatty() on the handle.  It can also filter out ^Z characters if 
>stdout is connected to the console.  Finally, it can remove trailing ^Z 
>from input after it reads it.  (Such removal will happen automatically if 
>the input is read in text mode.)
>
>Would that solve the problem?

Well, does not djgpp  claim to be an environment which  makes it easy to
port  Unix programs  to DOS  (even  at the  expense  of doing  a lot  of
contortions to implement stat accurately, for instance)? I claim that in
the same  way it  should be the  job of the  libc low-level  routines to
detect that  the output is to  a console device, and  do the appropriate
thing (filter ^Z,  whatever) so that no spurious error  is returned, and
that more programs can be ported painlessly.

Best regards,
  Jean MICHEL